SonicCaption
Hi HN — I’m Ethan, a solo developer and a language learner. I built SonicCaption because I often watch courses/videos and join meetings in languages I’m not fluent in, and I wanted something that works across sites, not just on one platform. What it is: a Chrome/Edge extension that adds live captions + translation on top of the page you’re already using (videos, meetings, livestreams, etc.). You can show bilingual captions or translation-only. How to try it: 1) Install the extension 2) Google sign-in (required to link usage quota and prevent abuse) 3) Open a tab with audio → click…
SonicCaption launched on February 3, 2026 with 3 votes, #3,486 of 16,627 launches that month and more than 50% of that year's launches.
What it does
SonicCaption is a Chrome/Edge extension that overlays ultra-low-latency live captions and instant translation on any video or meeting—YouTube, Zoom, Google Meet, courses, livestreams, and more. Show bilingual subtitles or translation-only, and customize styles to match how you learn and watch.
Get clear bilingual captions for YouTube, Zoom, Meet, and more directly in your browser. Built for language learners and non-native professionals.
Chrome / Edge extension for people who watch videos, streams, and online classes in another language. No uploads. Just hit Start and read along. YouTube, Netflix, Zoom, Twitch, courses... anything with audio. Pick your languages. SonicCaption listens and translates instantly. Bilingual subtitles for late-night streams, anime, and variety shows. Use dual subtitles to catch every formula, term, and example. See original + translation together, so you can learn as you watch. Try it with free minutes. Upgrade only if you actually use it. For teams of any size — from a 2-person team to your whole company. Hi, I'm Ethan Hu. I'm a software engineer at a large tech company and a serious language…from soniccaption.com
In the maker’s words, at launch
Hi HN — I’m Ethan, a solo developer and a language learner. I built SonicCaption because I often watch courses/videos and join meetings in languages I’m not fluent in, and I wanted something that works across sites, not just on one platform. What it is: a Chrome/Edge extension that adds live captions +…
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